Organ donation is regulated in a number of ways, including through a uniform law – specifically, the Uniform Anatomical Gift Act. There are three versions of the Act that are in use by various states; the U.S. Department of Health and Human Services maintains a chart of the differences in state legislation. The Uniform Anatomical Gift Act, among other things, includes provisions allowing people to sign up to become an organ donor when they receive their driver’s license. However, the success of this strategy is mixed, with registration rates differing greatly between states.